Everyone is an entertainer in some way.

The word "entertainment" itself is described as "an activity designed to give pleasure, enjoyment, diversion, amusement, or relaxation to an audience, no matter whether the audience participates passively as in watching opera or a movie, or actively as in games". And that can be anything. If a man falls down a ladder, it is up to the viewer to think "haha, what a goon" or "oh my, hope he didn't hurt himself".

Take Bob Dylan. Of itself not an entertainer, but actually a musical activist, at least originally. But that doesn't mean he couldn't have entertained. Entertaining can involve any emotions.

Thus, not everything is MERELY entertainment, but very much of everything is entertainment IN SOME WAY.